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From: ray@rochester.UUCP
Newsgroups: net.space
Subject: Re: SRB's
Message-ID: <15138@rochester.UUCP>
Date: Fri, 7-Feb-86 11:36:49 EST
Article-I.D.: rocheste.15138
Posted: Fri Feb  7 11:36:49 1986
Date-Received: Sun, 9-Feb-86 08:39:57 EST
References: <8602020240.AA04749@s1-b.arpa>
Organization: U. of Rochester, CS Dept.
Lines: 14

> Just heard they are saying that it WAS a burn through of the left SRB, and
> that it can be seen from  other camera angles.
> 
> Can anyone explain why on earth the thing didn't go tumbling madly
> after seperating? How there was no apparent sign of flame from the side of
> the SRB after seperating?
> 
I think the reason the SRB didn't spin off madly was due to the relatively small
thrust of 4% coming out the side versus the 96% coming out the engine.  I did
notice one of the SRBs slowly turning, but I don't think 4% could cause it to
spin wildly.  It should be easy to calculate the trajectory of an object with
a ratio of 24 to 1 rear thrust versus side thrust.  

ray